- 02 Jul, 2016 40 commits
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Lay the groundwork for the introduction of router interfaces This is first patchset on a way to introduce ipv4 routing offload support in mlxsw driver. Does preparations before router interfaces will be introduced in mlxsw. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Jiri Pirko authored
ip2me: To instruct HW to send trapped ip2me traffic to kernel, we have to add this trap. Selection ip2me traffic is introduced later on in this set. ARPs: We are going to stop flooding to CPU port when netdev isn't bridged and only get packets destined to the netdev's IP address and certain control packets. Add traps for ARP request (broadcast) and response (unicast) in order to get these to the CPU and resolve neighbours. host miss: If a packet is routed through a directly connected route and its destination IP is not in the device's neighbour table, then we need to trap it to CPU. This will cause the host to resolve the MAC of the neighbour, which will be eventually programmed to the device's table. router ingress: In order to trap packets in router part. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Ido Schimmel authored
When removing packet traps we should use action 'discard' instead of 'forward', as some trap IDs we'll add cannot be configured with the later. However, result is the same, as packets are not trapped to the CPU. In the future we will be able to reverse the operation properly by detaching the trap group from the CPU. Signed-off-by:
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Ido Schimmel authored
Add the Router Interface Table Register (RITR), which allows us to create and configure router interfaces (RIFs). Signed-off-by:
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Ido Schimmel authored
Incoming packets are directed to the router when they match an FDB entry with action forward to IP router. Add this action, which was mistakenly named "TRAP". Signed-off-by:
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Ido Schimmel authored
When enabling the router in the device we will represent L3 netdevs using router interfaces (RIFs). These will be specified whenever programming routes or neighbours on the netdev. Introduce the basic RIF infrastructure which allows one to lookup a RIF by its netdev. Later patches in the series will extend this, but the basic routines are needed now in order to direct traffic to CPU. Pointers to the RIF structs are stored in an array indexed by the RIF's number. This will allow us to efficiently update the kernel's neighbour table when regularly dumping the device's table. Signed-off-by:
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Ido Schimmel authored
Create a skeleton router file and do basic HW initialization of router. Signed-off-by:
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Ido Schimmel authored
During ports initialization a net device is registered for each available port, which implies the port is usable. However, a port is only usable after the different parts of the device (e.g. flooding, buffers) are initialized. This is especially important now, when we must initialize the router before the ports, as otherwise the device can't be initialized. Solve that by initializing the switch ports at the end of init sequence. Also, remove an unnecessary warning about port up/down events, which would otherwise be invoked whenever removing the driver, as ports are removed before unregistering the listener for these events. Signed-off-by:
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Ido Schimmel authored
Add the Router General Configuration Register (RGCR), which allows us to enable the router in the device and configure its various parameters. Signed-off-by:
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Ido Schimmel authored
We are going to assign router interfaces (RIFs) to netdevs if an IPv4 address was assigned to them. If one was assigned to a port netdev, this will translate to the PVID vPort being member in a RIF. While it's possible for a LAG slave to have an IP address, we can't have a vPort being member in two FIDs (assuming the LAG device will be put in bridge / assigned an IP address). Solve that by making the PVID vPort leave any FID it might be a member in when joining / leaving LAG. Note that the PVID vPort is the only vPort that can be present on the port when it's put under LAG. Signed-off-by:
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Ido Schimmel authored
When VLAN devices are created on top of LAG, their underlying vPorts are configured correctly with LAG membership. However, the PVID vPort is implicit and already present when the port netdev is put under LAG, so its LAG membership is never set. Set it correctly when joining / leaving LAG. This didn't matter until now, but we are going to introduce support for router interfaces (RIFs), which need to take into account LAG membership. Signed-off-by:
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Ido Schimmel authored
When port isn't bridged it is still possible to invoke switchdev ops and configure the device's VLAN filters. However, this will require us to use different Router InterFaces (RIFs) for the same netdev, instead of one per-netdev as with any other configuration. Taking the above into account and the fact that this functionality is questionable with regards to the device's normal use-case, remove it and instead return an error. Signed-off-by:
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Ido Schimmel authored
Port netdevs (e.g. swXpY) that are not bridged are represented in the device using a vPort with VID=PVID=1 (the PVID vPort), as untagged packets entering the switch are internally tagged with the PVID VLAN. When these packets are routed through a different port netdev they should egress untagged. This wasn't a problem until now, as non-bridged traffic only originated from the CPU, which transmits packets out of the port as-is. When a vPort is created with VID 1 mark it as egress untagged. Signed-off-by:
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David S. Miller authored
Michael Chan says: ==================== bnxt_en updates for net-next. Mostly small miscellaneous changes. Please review for net-next. Thanks. ==================== Signed-off-by: -
Michael Chan authored
The allowable range is 0.25 seconds to 1 second interval. Default is 1 second. Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
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Michael Chan authored
This is useful for multi-function devices. Signed-off-by:
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Michael Chan authored
With a default VLAN, the VF has its own VLAN domain and it can receive all traffic within that domain. Signed-off-by:
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Vasundhara Volam authored
Signed-off-by:
Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by:
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Michael Chan authored
For correctness, the MRU enables bit must be set when passing the MRU to firmware during vnic configuration. Signed-off-by:
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Rob Swindell authored
Add support to the Ethtool FLASHDEV command handler for additional firmware types to cover all the on-chip processors. Signed-off-by:
Rob Swindell <rob.swindell@broadcom.com> Signed-off-by:
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Rob Swindell authored
Upon successful mgmt processor firmware update, request a self reset upon next PCIe reset (e.g. system reboot). Signed-off-by:
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Rob Swindell authored
To support Secure Firmware Update, we must be able to allocate a staging area in the Flash. This patch adds support for the "update" type to tell firmware to do that. Signed-off-by:
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Michael Chan authored
Calling the firmware to do function reset on the PF will kill all the VFs. To prevent that, we call function reset on the 1st PF open before any VF can be activated. On subsequent PF opens (with possibly some active VFs), a bit has been set and we'll skip the function reset. VF driver will always do function reset on every open. If there is an AER event, we will always do function reset. Signed-off-by:
Michael Chan <michael.chan@broadocm.com> Signed-off-by:
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Michael Chan authored
And update driver version to 1.3.0. Signed-off-by:
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Michael Chan authored
Returning 0 for doing nothing is confusing to the user. Signed-off-by:
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Philippe Reynes authored
There are two generics functions phy_ethtool_{get|set}_link_ksettings, so we can use them instead of defining the same code in the driver. Signed-off-by:Philippe Reynes <tremyfr@gmail.com> Signed-off-by:
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Philippe Reynes authored
The private structure contain a pointer to phydev, but the structure net_device already contain such pointer. So we can remove the pointer phy in the private structure, and update the driver to use the one contained in struct net_device. Signed-off-by:
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David S. Miller authored
Saeed Mahameed says: ==================== Mellanox 100G SRIOV E-Switch offload and VF representors We are happy to announce SRIOV E-Switch offload and VF netdev representors. Or Gerlitz says: Currently, the way SR-IOV embedded switches are dealt with in Linux is limited in its expressiveness and flexibility, but this is not necessarily due to hardware limitations. The kernel software model for controlling the SR-IOV switch simply does not allow the configuration of anything more complex than MAC/VLAN based forwarding. Hence the benefits brought by SRIOV come at a price of management flexibility, when compared to software virtual switches which are used in Para-Virtual (PV) schemes and allow implementing complex policies and virtual topologies. Such SW switching typically involved a complex per-packet processing within the host kernel using subsystems such as TC, Bridge, Netfilter and Open-vswitch. We'd like to change that and get the best of both worlds: the performance of SR-IOV with the management flexibility of software switches. This will eventually include a richer model for controlling the SR-IOV switch for flow-based switching and tunneling. Under this model, the e-switch is configured dynamically and a fallback to software exists in case the hardware is unable to offload all required flows. This series from Hadar Hen-Zion and myself, is the 1st step in that direction, specfically, it provides full control on the SRIOV embedded switching by host software and paves the way to offload switching rules and polices with downstream patches. To allow for host based SW control on the SRIOV HW switch, we introduce per VF representor host netdevice. The VF representor plays the same role as TAP devices in PV setup. A packet send through the VF representor on the host arrives to the VF, and a packet sent through the VF is received by its representor. The administrator can hook the representor netdev into a kernel switching component. Once they do that, packets from the VF are subject to steering (matching and actions) of that software component." Doing so indeed hurts the performance benefits of SRIOV as it forces all the traffic to go through the hypervisor. However, this SW representation is what would eventually allow us to introduce hybrid model, where we offload steering for some of the VF/VM traffic to the HW while keeping other VM traffic to go through the hypervisor. Examples for the latter are first packet of flows which are needed for SW switches learning and/or matching against policy database or types of traffic for which offloading is not desired or not supported by the current HW eswitch generation. The embedded switch is managed through a PCI device driver. As such, we introduce a devlink/pci based scheme for setting the mode of the e-switch. The current mode (where steering is done based on mac/vlan, etc) is referred to as "legacy" and the new mode as "offloads". For the mlx5 driver / ConnectX4 HW case, the VF representors implement a functional subset of mlx5e Ethernet netdevices using their own profile. This design buys us robust implementation with code reuse and sharing. The representors are created by the host PCI driver when (1) in SRIOV and (2) the e-switch is set to offloads mode. Currently, in mlx5 the e-switch management is done through the PF vport (0) and hence the VF representors along with the existing PF netdev which represents the uplink share the PCI PF device instance. The series is built from two major components, the first relates to the e-switch management and the second to VF representors. We start with a refactoring that treats the existing SRIOV e-switch code as of operating in legacy mode. Next, we add the code for the offloads mode which programs the e-switch to operate in a way which serves for software based switching: 1. miss rule which matches all packets that do not match any HW other switching rule and forwards them to the e-switch management port (0) for further processing. 2. infrastructure for send-to-vport rules which conceptually bypass other "normal" steering rules which present at the e-switch datapath. Such rules apply only for packets that originate in the e-switch manager vport (0). Since all the VF reps run over the same e-switch port, we use more logic in the host PCI driver to do HW steering of missed packets into the HW queue opened by a the respective VF representor. Finally here, we add the devlink APIs to configure the e-switch mode. The second part from Hadar starts with some refactoring work which allow for multiple mlx5e NIC instances to be created over the same PCI function, use common resources and avoid wrong loopbacks. Next comes the heart of the change which is a profile definition which allow to practically have both "conventional" mlx5e NIC use cases such as native mode (non SRIOV), VF, PF and VF representor to share the Ethernet driver code. This is done by a small surgery that ended up with few internal callbacks that should be implemented by a profile instance. The profile for the conventional NIC is implemented, to preserve the existing functionality. The last two patches add e-switch registration API for the VF representors and the implementation of the VF representors netdevice profile. Being an mlx5e instance, the VF representor uses HW send/recv queues, completions queues and such. It currently doesn't support NIC offloads but some of them could be added later on. The VF representor has switchdev ops, where currently the only supported API is the one to the HW ID, which is needed to identify multiple representors belonging to the same e-switch. The architecture + solution (software and firmware) work were done by a team consisting of Ilya Lesokhin, Haggai Eran, Rony Efraim, Tal Anker, Natan Oppenheimer, Saeed Mahameed, Hadar and Or, thanks you all! v1 --> v2 fixes: * removed unneeded variable (patch #3) * removed unused value DEVLINK_ESWITCH_MODE_NONE (patch #8) * changed the devlink mode name from "offloads" to "switchdev" which better describes what are we referring here, using a known concept (patch #8) * correctly refer to devlink e-switch modes (patch #10) * use the correct mlx5e way to define the VF rep statistics (patch #16) v2 --> v3 fixes: * Rebased on top 6fde0e63 'be2net: signedness bug in be_msix_enable()' * Handled compilation error introduced by rebase on top "f5074d0c Merge branch 'mlx5-100G-fixes'" * This series applies perfectly even with 'mlx5 resiliency and xmit path fixes' merged to net-next ==================== Signed-off-by:
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Hadar Hen Zion authored
Implement the relevant profile functions to create mlx5e driver instance serving as VF representor. When SRIOV offloads mode is enabled, each VF will have a representor netdevice instance on the host. To do that, we also export set of shared service functions from en_main.c, such that they can be used by both NIC and repsresentors netdevs. The newly created representor netdevice has a basic set of net_device_ops which are the same ndo functions as the NIC netdevice and an ndo of it's own for phys port name. The profiling infrastructure allow sharing code between the NIC and the vport representor even though the representor has only a subset of the NIC functionality. The VF reps and the PF which is used in that mode to represent the uplink, expose switchdev ops. Currently the only op supposed is attr get for the port parent ID which here serves to identify net-devices belonging to the same HW E-Switch. Other than that, no offloading is implemented and hence switching functionality is achieved if one sets SW switching rules, e.g using tc, bridge or ovs. Port phys name (ndo_get_phys_port_name) is implemented to allow exporting to user-space the VF vport number and along with the switchdev port parent id (phys_switch_id) enable a udev base consistent naming scheme: SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}=="<phys_switch_id>", \ ATTR{phys_port_name}!="", NAME="$PF_NIC$attr{phys_port_name}" where phys_switch_id is exposed by the PF (and VF reps) and $PF_NIC is the name of the PF netdevice. Signed-off-by:Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
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Hadar Hen Zion authored
Introduce E-Switch registration/unregister representors functions. Those functions are called by the mlx5e driver when the PF NIC is created upon pci probe action regardless of the E-Switch mode (NONE, LEGACY or OFFLOADS). Adding basic E-Switch database that will hold the vport represntors upon creation. This patch doesn't add any new functionality. Signed-off-by:
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Hadar Hen Zion authored
To allow support in representor netdevices where we create more than one netdevice per NIC, add profiles to the mlx5e driver. The profiling allows for creation of mlx5e instances with different characteristics. Each profile implements its own behavior using set of function pointers defined in struct mlx5e_profile. This is done to allow for avoiding complex per profix branching in the code. Currently only the profile for the conventional NIC is implemented, which is of use when a netdev is created upon pci probe. This patch doesn't add any new functionality. Signed-off-by:
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Hadar Hen Zion authored
In the current driver implementation two types of receive queue tables (RQTs) are in use - direct and indirect. Change the driver to mark each new created RQT (direct or indirect) as "enabled". This behaviour is needed for introducing new mlx5e instances which serve to represent SRIOV VFs. The VF representors will have only one type of RQTs (direct). An "enabled" flag is added to each RQT to allow better handling and code sharing between the representors and the nic netdevices. This patch doesn't add any new functionality. Signed-off-by:
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Hadar Hen Zion authored
The current refresh tirs self loopback mechanism, refreshes all the tirs belonging to the same mlx5e instance to prevent self loopback by packets sent over any ring of that instance. This mechanism relies on all the tirs/tises of an instance to be created with the same transport domain number (tdn). Change the driver to refresh all the tirs created under the same tdn regardless of which mlx5e netdev instance they belong to. This behaviour is needed for introducing new mlx5e instances which serve to represent SRIOV VFs. The representors and the PF share vport used for E-Switch management, and we want to avoid NIC level HW loopback between them, e.g when sending broadcast packets. To achieve that, both the representors and the PF NIC will share the tdn. This patch doesn't add any new functionality. Signed-off-by:
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Hadar Hen Zion authored
To allow creating more than one netdev over the same PCI function, we change the driver such that global NIC resources are created once and later be shared amongst all the mlx5e netdevs running over that port. Move the CQ UAR, PD (pdn), Transport Domain (tdn), MKey resources from being kept in the mlx5e priv part to a new resources structure (mlx5e_resources) placed under the mlx5_core device. This patch doesn't add any new functionality. Signed-off-by:
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Or Gerlitz authored
Implement handlers for the devlink commands to get and set the SRIOV E-Switch mode. When turning to the switchdev/offloads mode, we disable the e-switch and enable it again in the new mode, create the NIC offloads table and create VF reps. When turning to legacy mode, we remove the VF reps and the offloads table, and re-initiate the e-switch in it's legacy mode. The actual creation/removal of the VF reps is done in downstream patches. Signed-off-by:
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Or Gerlitz authored
The devlink interface is initially used to set/get the mode of the SRIOV e-switch. Currently, these are only stubs for get/set, down-stream patch will actually fill them out. Signed-off-by:
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Or Gerlitz authored
Add the commands to set and show the mode of SRIOV E-Switch, two modes are supported: * legacy: operating in the "old" L2 based mode (DMAC --> VF vport) * switchdev: the E-Switch is referred to as whitebox switch configured using standard tools such as tc, bridge, openvswitch etc. To allow working with the tools, for each VF, a VF representor netdevice is created by the E-Switch manager vendor device driver instance (e.g PF). Signed-off-by:
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Or Gerlitz authored
Add the API to create vport rx rules of the form packet meta-data :: vport == $VPORT --> $TIR where the TIR is opened by this VF representor. This logic will by used for packets that didn't match any rule in the e-switch datapath and should be received into the host OS through the netdevice that represents the VF they were sent from. Signed-off-by:
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Or Gerlitz authored
Belongs to the NIC offloads name-space, and to be used as part of the SRIOV offloads logic to steer packets that hit the e-switch miss rule to the TIR of the relevant VF representor. Signed-off-by:
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Or Gerlitz authored
Add a new namespace (MLX5_FLOW_NAMESPACE_OFFLOADS) to be populated with flow steering rules that deal with rules that have have to be executed before the EN NIC steering rules are matched. The namespace is located after the bypass name-space and before the kernel name-space. Therefore, it precedes the HW processing done for rules set for the kernel NIC name-space. Under SRIOV, it would allow us to match on e-switch missed packet and forward them to the relevant VF representor TIR. Signed-off-by:
Amir Vadai <amir@vadai.me> Signed-off-by:
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